CN202812266U - Valve plate of soft seal gate valve - Google Patents
Valve plate of soft seal gate valve Download PDFInfo
- Publication number
- CN202812266U CN202812266U CN 201220487353 CN201220487353U CN202812266U CN 202812266 U CN202812266 U CN 202812266U CN 201220487353 CN201220487353 CN 201220487353 CN 201220487353 U CN201220487353 U CN 201220487353U CN 202812266 U CN202812266 U CN 202812266U
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- valve
- valve plate
- seal
- sealing
- plate
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Abstract
The utility model discloses a valve plate of a soft seal gate valve. The valve plate of the soft seal gate valve comprises a plate body and a wedge type seal surface. One side, near a valve plate center, of the wedge type seal surface is provided with a slope surface, wherein the slope surface contacts with the wedge type seal surface to form an include angle which enables a seal contact surface to become narrow. When the valve plate is manufactured, double angles are manufactured on the wedge type seal surface where the valve plate contacts with the valve body, and therefore when the valve plate is not squeezed, the seal contact surface of the wedge type seal surface of the valve plate is very narrow. When the valve is sealed, the valve plate moves downward, and the valve plate deforms when being squeezed to produce a seal width which is needed in seal. The valve plate structure can reduce torque, the valve can be opened and closed very easily, and very large friction between the seal contact surface and the seal surface of the valve body does not exist.
Description
Technical field
The utility model relates to valve technology field, particularly relates to a kind of valve plate of soft sealing gate valve.
Background technique
The major advantage of gate valve is: fluid resistance is little, and keying saves labour, and can use in the situation of medium two-way flow, does not have directivity, and sealing surface is difficult for erosion during standard-sized sheet, and structure length is short, not only is fit to do minor valve, and is fit to do large valve.
Gate valve is divided into again metal sealing gate valve and soft seal (spring support sealing) gate valve.The metal sealing gate valve also is hard seal valve, is a kind of widely used valve.Its closed principle is that the flashboard sealing surface is bright and clean, smooth consistent, bonded to each other with the sealing surface of seat height, can stop the MEDIA FLOW mistake, and relies on the mould shape of backform, spring or flashboard, strengthens sealing effect.It is the main cutting action that rises in pipeline.
Soft seal (spring support sealing) gate valve mainly is to utilize the whole encapsulate of flashboard to produce deformation-compensated effect to reach good sealing effect, has overcome the phenomenon that general Gate-valve sealing is bad, produce leakage or corrode.This valve has the remarkable advantages such as switch is light and handy, sealing is reliable, lightweight, long service life.
The soft seal of domestic market (spring support sealing) gate valve, valve plate is mainly face with valve body sealing surface and contacts, it is to consume in the frictional force that overcomes between caulking gum and the valve body that a big chunk power is arranged in opening-closing process, thereby moment of torsion increases in opening-closing process.Surface of contact is the wedge-type sealing surface at first when valve plate is closed, and the width of well-known valve sealing face determines the length of pore.When width strengthened, fluid lengthened along the movement travel of pore, and resistance to motion increases.The width of increasing sealing contact surface can reduce the erosion wear in the high pressure valve.If although this sealing contact surface is the certain face of width have been guaranteed sealing effect but the moment of torsion that when sealing produces has just been increased, so just need a kind of sealing effect that can guarantee to reduce again the valve board structure of moment of torsion.
The model utility content
The purpose of this utility model is for the technological deficiency that exists in the prior art, and a kind of valve plate of soft sealing gate valve is provided.
For realizing that the technological scheme that the purpose of this utility model adopts is:
A kind of valve plate of soft sealing gate valve comprises plate body and is formed on wedge-type sealing surface on the plate body, and described wedge-type sealing surface closes on valve plate center one side and is formed with domaticly, describedly domaticly forms the angle that sealing contact surface is narrowed down with the wedge-type sealing contact surface.
The sealing contact surface angle of described domatic and wedge-type sealing surface is at 15-25 °.
Compared with prior art, the beneficial effects of the utility model are:
Valve plate of the present utility model is done two angles at the wedge-type sealing surface that original valve plate contacts with valve body when making, the sealing contact surface of valve plate wedge-type sealing surface is very not narrow when valve plate is squeezed.When valve seal, valve plate moves downward, needed sealed width when valve plate deforms to produce sealing when being squeezed.Valve board structure of the present utility model can reduce moment of torsion, can very easily with valve closing, can not have very large sealing contact surface and the frictional force between the valve body sealing surface when opening or closing.
Description of drawings
Figure 1 shows that the valve board structure schematic representation of soft sealing gate valve of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As shown in Figure 1, valve plate 1 of the present utility model comprises plate body and the wedge-type sealing surface 2 that is formed on the plate body, and described wedge-type sealing surface 2 is wedge-type sealing contact surface 3 with valve body or contacted of valve seat.Described wedge-type sealing surface close on valve plate center one side be formed with domatic 4, described domatic and wedge-type sealing contact surface angle.Preferably, described domatic and angle sealing contact surface are 20 °.Wherein, the angle of wedge of the sealing contact surface of described wedge-type sealing surface is 7.5 °, and this is looked the sealing surface of valve and has nothing in common with each other.
Do the surface of contact that two angles can reduce valve plate wedge-type sealing surface and valve body at the wedge-type sealing surface, it is the width that domatic 4 existence has reduced sealing contact surface, in the valve plate process that sealing contact surface is being squeezed during to lower seal, produce distortion, when valve plate moves downward gradually, the sealing contact surface amount of deformation increases at this moment gradually, and domatic the beginning contacts with the sealing surface of valve body and is out of shape, until the valve plate sealing bottom surface is dead, valve plate wedge-type sealing surface has also reached the seal request width, do not affect sealing effect, in valve opening, because valve plate rubber be have flexible, domaticly at first break away from valve body sealing surface, narrow sealing contact surface state before namely having got back to again when not being squeezed, so frictional force reduces gradually when opening, thereby the power that consumes when opening is much smaller.Thereby when Open valve the work of wanting just reduce a lot.And then promoted the usability of product.
The above only is preferred implementation of the present utility model; should be noted that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (2)
1. the valve plate of a soft sealing gate valve, comprise plate body and the wedge-type sealing surface that is formed on the plate body, it is characterized in that described wedge-type sealing surface closes on valve plate center one side and is formed with domaticly, described domatic and wedge-type sealing contact surface form the angle that sealing contact surface is narrowed down.
2. the valve plate of soft sealing gate valve as claimed in claim 1 is characterized in that, the sealing contact surface angle of described domatic and wedge-type sealing surface is at 15-25 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220487353 CN202812266U (en) | 2012-09-21 | 2012-09-21 | Valve plate of soft seal gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220487353 CN202812266U (en) | 2012-09-21 | 2012-09-21 | Valve plate of soft seal gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202812266U true CN202812266U (en) | 2013-03-20 |
Family
ID=47871136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220487353 Expired - Fee Related CN202812266U (en) | 2012-09-21 | 2012-09-21 | Valve plate of soft seal gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202812266U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461509A (en) * | 2017-10-09 | 2017-12-12 | 铜陵天海流体控制股份有限公司 | A kind of high reliability elastic soft sealing gate valve |
-
2012
- 2012-09-21 CN CN 201220487353 patent/CN202812266U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461509A (en) * | 2017-10-09 | 2017-12-12 | 铜陵天海流体控制股份有限公司 | A kind of high reliability elastic soft sealing gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20150921 |
|
| EXPY | Termination of patent right or utility model |